Mississippi River IA 01-NEM-62
from Lock &Dam 15 at Davenport (Scott Co.) to Lock & Dam 14 at Le Claire (Scott Co.) (= Pool 15) (Davenport water supply intake is located near river mile 484.)
This is a Legacy Assessment. Prior to 2004, assessments were developed under a methodology that pre-dated the Integrated Report guidelines.
Assessment Cycle
1994
Result Period
1990 - 1992
Designations
Assessment Type
Monitored
Integrated Report
Category 0
Legacy ADBCode
IA 01-NEM-0010_2
Overall Use Support
Not supporting
Aquatic Life Use Support
Fully
Fish Consumption
Not supporting
Primary Contact Recreation
Not assessed
Drinking Water
Not assessed
Documentation
Assessment Comments
Five fish contaminant monitoring sites for ALCOA at Davenport.
Basis for Assessment
Monitoring conducted for ALCOA in fall 1992 shows continued high levels of PCBs in bottom feeding fish; fish consumption advisory to remain. According to consent order w/ EPA, next sampling should be in 1994.
Monitoring and Methods
Assessment Key Dates
Methods
| 230 | Fixed station physical/chemical (conventional plus toxic pollutants) |
| 260 | Fish tissue analysis |
Monitoring Levels
| Biological | 0 |
| Habitat | 0 |
| Physical Chemistry | 0 |
| Toxic | 0 |
| Pathogen Indicators | 0 |
| Other Health Indicators | 0 |
| Other Aquatic Life Indicators | 0 |
| # of Bio Sites | 0 |
| BioIntegrity | N/A |
Causes and Sources of Impairment
| Causes | Use Support | Cause Magnitude | Sources | Source Magnitude |
|---|---|---|---|---|
| Arsenic | Drinking Water | Not Impairing |
|
|
| Metals | Drinking Water | Not Impairing |
|
|